USN-7931-3: Linux kernel (Real-time) vulnerabilities

USN-7931-3: Linux kernel (Real-time) vulnerabilities

Publication date:15 December 2025
Overview: Several security issues were fixed in the Linux kernel.

Packages

• linux-realtime - Linux kernel for Real-time systems
• linux-realtime-6.8 - Linux kernel for Real-time systems

Details
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:

• Cryptographic API;
• Media drivers;
• Memory management;
• Appletalk network protocol;
• Netfilter

Update instructions
After a standard system update you need to reboot your computer to make all the necessary changes.
The problem can be corrected by updating your system to the following package versions:

24.04 LTS noble

• linux-image-6.8.1-1039-realtime – 6.8.1-1039.40
• linux-image-realtime – 6.8.1-1039.40
• linux-image-realtime-6.8.1 – 6.8.1-1039.40
• 22.04 LTS jammy linux-image-6.8.1-1039-realtime – 6.8.1-1039.40~22.04.1
• linux-image-realtime-6.8.1 – 6.8.1-1039.40~22.04.1
• linux-image-realtime-edge – 6.8.1-1039.40~22.04.1
• linux-image-realtime-hwe-22.04 – 6.8.1-1039.40~22.04.1